Installation Time
(approx) 6 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
FREE 1 to 3-Day Delivery on Orders $119+ Details
Talk to a Mustang Sales Tech
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
American Racing Headers 1-7/8-Inch Long Tube Headers with Catted X-Pipe (99-04 Mustang Cobra, Mach 1)
Item 404113
$0.00
Our Price
$1,995.53 (pair)
FREE Shipping Market Price $2,294.86 You Save 13% ($299.33) Up to 10% off for Military & First Responders! See DetailsWill this fit your Vehicle?
Ship to: Columbus - 43215
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Long Tube Headers
- Catted X-Pipe
- 1-7/8" Primaries
- 3/8" Flanges
- 304 Stainless Steel Construction
- 100% Leak Free
- Merge Collectors w/ Scavenger Spikes
- Increases Horsepower and Torque
- High-Flow 200 Cell Metallic Substrate Cats
- Intended for Off-Road Use Only
- Made in the USA
- Expert Installation
- Limited Lifetime Warranty
- Fits 1999-2004 Ford Mustang Cobra's and Mustang Mach 1's
| Brand | American Racing Headers |
| Header Type | Headers & Mid-Pipe Kit |
| Header Primary Size | 1.76-2.00 Inch |
| Header Finish | Raw |
Description
Delivers the Max. The American Racing Headers 1-7/8 in. Long Tube Headers w/ Catted X-Pipe - is the picture of high performance - combining high-quality materials with innovative and race-tested designs. Every component of this header system is made in the USA to ensure the maximum horsepower and torque gains for your Cobra or Mach 1.
Deep Sound. These headers will announce your arrival long before you get there, with a deep aggressive sound.
Ultra High Flow. The X-pipe comes equipped with 200 cell metallic substrate cats for an ultra high flow.
All Stainless - All the Time. Manufactured entirely from 304 stainless steel, these long tube headers are engineered for a 100% leak-free fit. They feature true 2 to 1 merge collectors with scavenger spikes, a direct bolt-in 3" catted X-pipe and 1-7/8" primaries with 3/8" flanges for extra strength.
No Tuning Required. These headers are designed to operate without the need for custom tuning.
Not For Street Use. These headers are not CARB certified and are intended for off-road use only.
Installation. Professional installation is recommended, but those with an expert level of mechanical ability can generally complete the task in around 6 hours.
Limited Lifetime Warranty. This product is backed by a limited lifetime warranty against defects in materials and workmanship. See manufacturer's website for details.
Application. The American Racing Headers 1-7/8 in. Long Tube Headers w/ Catted X-Pipe will fit 1999-2004 Ford Mustang Cobras and Mustang Mach 1's.
Fitment:
DetailsAmerican Racing Headers MT4-99178300LSWC
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (2) Headers
- (1) Catted X-Pipe
5.0
Customer Reviews (6)
Reviews of American Racing Headers Exhaust products have an average rating of 4.9 out of 5
Questions & Answers
10 More Questions
Will It Fit My Mustang
- Cobra - 99, 01, 03, 04
- Mach 1 - 03, 04
